On the top of these mile thick slabs of ice the water is percolating quickly to the base and greasing the skids, as it were, for the slide of that ice into the ocean.

Climate change is the single biggest thing that humans have ever done on this planet. The one thing that needs to be bigger is our movement to stop it.

The technology we need most badly is the technology of community, the knowledge about how to cooperate to get things done.

Very few people on earth ever get to say: 'I am doing, right now, the most important thing I could possibly be doing.' If you'll join this fight that's what you'll get to say

what you do every day is what forms your mind and precious few of us can or would spend most days outdoors.

In 50 years, no one will care about the fiscal cliff or the Euro crisis. They'll just ask, "So the Arctic melted, and then what did you do?"

Global warming is no longer a philosophical threat, no longer a future threat, no longer a threat at all. It's our reality.

Advent: the time to listen for footsteps - you can't hear footsteps when you're running yourself.

We've been given a warning by science, and a wake-up call by nature; it is up to us now to heed them.

The real negotiation is between humans on the one hand and chemistry and physics on the other. And chemistry and physics, unfortunately, don't bargain.

We can either save the planet from catastrophic warming, or protect fossil fuel CEOs. Not both. Do the math(s)

The more I think I know I realize, the more that is left unknown and that's the best part.

Let's burn our past down and make something better from its ashes.

There are things that life demands of every person living on the surface of the earth.

A chief is a man who assumes responsibility. He does not say "My men were beaten " he says "I was beaten."

My fans are the best in the world! They've grown up with me and stayed with me through this entire journey.

What keeps us from achieving our heart's desires is not anything outside of us, it's the conflict inside.

I do like a good mystery. I'm reading Edgar Allan Poe now. I also like autobiographies.

Speaking of death, LeBlanc boasted he could kill me in the waiting room. I broke his wrist. He wasn't impressed.

People think innovation is just having a good idea but a lot of it is just moving quickly and trying a lot of things.

Except in this ignorant and material century, men have always worn precious stuffs and beautiful colours as well as women.